Because map can take either a block or an expression, and open curly can start a block or an expression (start of an anonymous hash), there's some "guessing" code to deal with the ambiguity, and sometimes it guesses wrong.

You can disambiguate these with: 

map {; ... definitely a block ... } ...
map +{ ... definitely an anonhash ... }, ...

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This is documented in perldata I believe. Or perlref.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to •Re: Mysterious "syntax error" by merlyn
in thread Mysterious "syntax error" by BrowserUk

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